While no research hypothesis is ever definitely false, failing to reject the null hypothesis in a study that has a high level of power allows one to
A) suspect that the research hypothesis may still be true.
B) conclude that the research hypothesis is most likely false.
C) make no statements about the research hypothesis.
D) reject the notion that the effect size has anything to do with statistical significance.
B
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Intellectual disability is defined as a. Significantly below-average intellectual ability
b. Significantly below-average intellectual ability and adaptive functioning. c. significant deficits in self-care abilities and social interaction d. a low IQ score.
In a study examining the effects of time of day (morning or afternoon) and temperature (cool, normal, warm) on worker productivity, how many main effects are possible?
a. 3 b. 6 c. 5 d. 2
Why might parents be unaware that their children have an eating disorder?
a. They pay little attention to them in adolescence b. Teens hide their disorder in a variety of ways by lying about what they eat and wearing loose fitting clothing c. Most parents become permissive when their children are adolescents with little monitoring of their meals d. They are neglectful
Virtually all researchers agree that parents can lessen older babies' need to cry by
A) providing a multitude of engaging activities for them. B) surrounding them with a variety of visually stimulating toys. C) encouraging more mature ways of expressing their desires. D) placing them in group child care in early infancy.